<clickhouse>
    <remote_servers>
        <cluster>
            <shard>
                <internal_replication>true</internal_replication>
                <replica>
                    <host>clickhouse1</host>
                    <port>9000</port>
                </replica>
                <replica>
                    <host>clickhouse2</host>
                    <port>9000</port>
                </replica>
                <replica>
                    <host>clickhouse3</host>
                    <port>9000</port>
                </replica>
            </shard>
            <allow_distributed_ddl_queries>true</allow_distributed_ddl_queries>
        </cluster>
    </remote_servers>
</clickhouse>
